(4x-4)(4x+2)=1

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Solution for (4x-4)(4x+2)=1 equation:


Simplifying
(4x + -4)(4x + 2) = 1

Reorder the terms:
(-4 + 4x)(4x + 2) = 1

Reorder the terms:
(-4 + 4x)(2 + 4x) = 1

Multiply (-4 + 4x) * (2 + 4x)
(-4(2 + 4x) + 4x * (2 + 4x)) = 1
((2 * -4 + 4x * -4) + 4x * (2 + 4x)) = 1
((-8 + -16x) + 4x * (2 + 4x)) = 1
(-8 + -16x + (2 * 4x + 4x * 4x)) = 1
(-8 + -16x + (8x + 16x2)) = 1

Combine like terms: -16x + 8x = -8x
(-8 + -8x + 16x2) = 1

Solving
-8 + -8x + 16x2 = 1

Solving for variable 'x'.

Reorder the terms:
-8 + -1 + -8x + 16x2 = 1 + -1

Combine like terms: -8 + -1 = -9
-9 + -8x + 16x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-9 + -8x + 16x2 = 0

Begin completing the square.  Divide all terms by
16 the coefficient of the squared term: 

Divide each side by '16'.
-0.5625 + -0.5x + x2 = 0

Move the constant term to the right:

Add '0.5625' to each side of the equation.
-0.5625 + -0.5x + 0.5625 + x2 = 0 + 0.5625

Reorder the terms:
-0.5625 + 0.5625 + -0.5x + x2 = 0 + 0.5625

Combine like terms: -0.5625 + 0.5625 = 0.0000
0.0000 + -0.5x + x2 = 0 + 0.5625
-0.5x + x2 = 0 + 0.5625

Combine like terms: 0 + 0.5625 = 0.5625
-0.5x + x2 = 0.5625

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 0.5625 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 0.5625 + 0.0625

Combine like terms: 0.5625 + 0.0625 = 0.625
0.0625 + -0.5x + x2 = 0.625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 0.625

Calculate the square root of the right side: 0.790569415

Break this problem into two subproblems by setting 
(x + -0.25) equal to 0.790569415 and -0.790569415.

Subproblem 1

x + -0.25 = 0.790569415 Simplifying x + -0.25 = 0.790569415 Reorder the terms: -0.25 + x = 0.790569415 Solving -0.25 + x = 0.790569415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 0.790569415 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 0.790569415 + 0.25 x = 0.790569415 + 0.25 Combine like terms: 0.790569415 + 0.25 = 1.040569415 x = 1.040569415 Simplifying x = 1.040569415

Subproblem 2

x + -0.25 = -0.790569415 Simplifying x + -0.25 = -0.790569415 Reorder the terms: -0.25 + x = -0.790569415 Solving -0.25 + x = -0.790569415 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -0.790569415 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -0.790569415 + 0.25 x = -0.790569415 + 0.25 Combine like terms: -0.790569415 + 0.25 = -0.540569415 x = -0.540569415 Simplifying x = -0.540569415

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.040569415, -0.540569415}

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